1040399

Appears in sequences

• Product of twin primes of form (4*k+3,4*(k+1)+1), k>=0.at n=16A071700
• G-Lehmer numbers: Composite numbers k such that A060968(k) divides A201629(k).at n=23A235864
• Composite numbers k such that 2^k == 1 (mod cototient(k)).at n=24A291619